Alexander has just moved into Stermont, but the elementary school is being torn down, his new classroom is located in the hospital morgue, a notebook he finds is full of information about monsters--and everywhere he turns there are spooky balloon men determined to attack him. Alejandro Bopp se acaba de mudar a Montalbán y ya está convencido de que es una ciudad espeluznante. Primero, encuentra un cuaderno lleno de dibujos de monstruos. Luego, empieza...